Patent GB-583231-A (GB)
Title: Improvements in fashioning means for knitting machines
IPC: D04B11/00
Filed: 1944-03-07
Abstract: 583,231. Knitting. TEXTILE MACHINE WORKS. March 7, 1944, No. 4231. Convention date, Jan. 16, 1943. [Class 74 (ii)] A single - unit full - fashioned machine is provided with means for rotating the end stop spindles 89 in the widening direction to move the ends stops 91 at both ends of the machine two needle pitches at each step and with means for rotating the point comb spindles 88 to move the point combs 78 in the same direction an equal distance, but in two steps. Each point comb spindle 88 can be rotated in the widening direction by a pawl 105 which, dependent upon the position of a manually adjustable cam 152, moves the corresponding point comb either two needle pitches or one needle pitch, and a pawl 109 which rotates the spindle 88 to move the point comb one needle pitch. The usual pawls 101 for moving the combs 78 in narrowing direction are provided. Pawls 102, 106 rotate the end stop spindles in the narrowing and widening directions. All five pawls at each end of the machine are carried by and actuated by a common member 97 which is raised and lowered when the main cam shaft 62 is moved axially to fashioning position to bring a cam 98 thereon into alignment with a follower 99 upon the member 97. During a widening operation, the pawl 105 moves the point combs one needle pitch during the upstroke of the member 97, and the pawl 109 moves the combs during the down stroke. The pawls 101, 102 are connected together by a link 115, and the pawls 105, 106 by a link 117, and a pattern controlled cam 108 operative upon pins 118 on the pawls 101, 105 determines whether narrowing or widening shall occur. The cam 108 is connected by a rod 126 and lever 125 to a lever 123 carrying a cam follower 122 which engages either a plain disc 119 or a cam 121 upon the main cam shaft 62. During knitting, the follower 122 engages the disc 119 to hold the pawls in narrowing position, but the member 97 is not actuated. In fashioning the follower 122 is aligned with the cam 121, and during widening engages the cam so that during the upward stroke of the member 97, the pawls 105 and 106 are operative. During narrowing, the arm 123 is raised by connections from stops 67 upon a pattern chain 64 so that the cam follower 122 cannot follow the cam surface 121 and the pawls 101, 102 remain operative. The pawl 109 is controlled so that it is inoperative during narrowing and operative during widening by a link 157, Fig. 16, and lever 158. The lever 158 is mounted upon a shaft 159 supporting a bar 166 carrying cam members 167-169, the central member 168 being movable, and a space or recess being provided between the members 168, 169. During narrowing an arm 164 upon each end stop nut 96 rests first upon cam 167 to rotate shaft 159 and lever 158'against a spring 162 to move the pawl 109 to inoperative position. The arm 164, in this direction of movement of the end stop, moves on to the stop 168 before leaving the cam. 167 so that the pawl 109 remains inoperative. During widening, the arm 164 moves into the recess between cams 169, 168 and the spring 162 restores the bar 166 to its original position, and through an arm 183 and wheel 186 tensions a chain 187 to lift the cam 168 from the path of the arm 164 so that the pawl 109 is allowed to rotate the comb spindle. For forming a line of lace openings inclined to the selvedge, means are provided for preventing the racking of each of the end stop spindles 89 in the widening direction while allowing the point comb spindles to be rotated. A lever 201 is held by a spring 203 in the position shown in Fig. 10, and is arranged to be moved by a notched link 205 so as to hold the pawl 106 inoperative. The link 205 is mounted upon an arm 206 rotatable about a rod and secured by a web 217 to a cam portion 222 engaged, when the lever 201 is to be moved, by a block 224 movable axially of the comb spindle 88 with the usual nut 94 thereon. A stocking blank having heel pouches H formed by widening and subsequently narrowing, and in which lace opening P formed by the widening points extend obliquely up into the high heel reinforcements R can be made. Alternatively, the widening marks may begin with the widening of the fabric by manually shifting the points after the calf fashioning has been effected ; the fashioning marks in the heel may be arranged closer to the selvedge than are the calf fashioning marks C.